The Winco FW11R-ADP Adapter Ring is designed for use with the FW-11R250 and FW-11R500 food warmers. This essential accessory allows you to convert your unit from accommodating 11 qt. inset pans to 7 qt. inset pans, enhancing versatility in your food service operations. Each adapter ring is sold individually, providing a practical solution for optimizing your food warmer's capacity.